if you start a coin rolling on a table with care , u can make it roll in a circle.The coin will lean inward with its axis tilted. The radius of the coin is b.The radius of the circle it follows on the table is R and its velocity is v.assume no slipping.find the angle that axis of coin makes with horizontal.
(source- klepner kolenkow 7.6)
i think they are f(centripetal)=mv^2/R, F(friction)=mew N and torque balance
The Attempt at a Solution
mew mg = mv^2/R
and torque balance gives N R sin theta=F(fric)R cos theta
gives tan theta=mew=v^2/Rg
but the answer is given tan theta= 3v^2/2Rg !